The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2005
Filed:
Dec. 21, 2001
Man Ho NA, Kyonggi-do, KR;
Ho Joong Kang, Kyonggi-do, KR;
Man Ho Na, Kyonggi-do, KR;
Ho Joong Kang, Kyonggi-do, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Illumination system in a liquid crystal projector for improving an optical efficiency of a fly eye lens, including a light source, a first fly eye lens having first lens cells each with a first center point, and second lens cells each with a second center point disposed in outer parts of the first lens cells, for receiving beams of lights from the light source in correspondence to the first center points of the first lens cells and the second center points of the second lens cells, respectively, and a second fly eye lens having a plurality of lens cells for refracting the beams from the first fly eye lens into parallel beams.